1102402145 has 16 divisors (see below), whose sum is σ = 1508446800. Its totient is φ = 766193664.

The previous prime is 1102402141. The next prime is 1102402153. The reversal of 1102402145 is 5412042011.

It is a happy number.

1102402145 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 6990736 + 1095411409 = 2644^2 + 33097^2 .

It is a cyclic number.

It is not a de Polignac number, because 1102402145 - 2² = 1102402141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1102402141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 497720 + ... + 499929.

It is an arithmetic number, because the mean of its divisors is an integer number (94277925).

Almost surely, 2^1102402145 is an apocalyptic number.

It is an amenable number.

1102402145 is a deficient number, since it is larger than the sum of its proper divisors (406044655).

1102402145 is a wasteful number, since it uses less digits than its factorization.

1102402145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997684.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1102402145 is about 33202.4418529722. The cubic root of 1102402145 is about 1033.0309893001.

Adding to 1102402145 its reverse (5412042011), we get a palindrome (6514444156).

The spelling of 1102402145 in words is "one billion, one hundred two million, four hundred two thousand, one hundred forty-five".